rkyv 0.4.3

Zero-copy deserialization framework for Rust
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65

rkyv (*archive*) is a zero-copy deserialization framework for Rust.

---

## API Documentation


- [rkyv](https://docs.rs/rkyv), the core library
- [rkyv_dyn](https://docs.rs/rkyv_dyn), which adds trait object support to rkyv
- [rkyv_typename](https://docs.rs/rkyv_typename), a type naming library

## Book


- The [rkyv book](https://djkoloski.github.io/rkyv) covers the motivation and architecture of rkyv

## Sister Crates:


- [bytecheck](https://github.com/djkoloski/bytecheck), which rkyv uses for validation
- [ptr_meta](https://github.com/djkoloski/ptr_meta), which rkyv uses for pointer manipulation

---

## rkyv in action


```rust
use rkyv::{
    archived_value,
    de::deserializers::AllocDeserializer,
    ser::{
        serializers::WriteSerializer,
        Serializer,
    },
    AlignedVec,
    Archive,
    Serialize,
    Deserialize,
};

#[derive(Archive, Deserialize, Serialize, Debug, PartialEq)]

struct Test {
    int: u8,
    string: String,
    option: Option<Vec<i32>>,
}

fn main() {
    let value = Test {
        int: 42,
        string: "hello world".to_string(),
        option: Some(vec![1, 2, 3, 4]),
    };

    let mut serializer = WriteSerializer::new(AlignedVec::new());
    let pos = serializer.serialize_value(&value).expect("failed to serialize value");
    let buf = serializer.into_inner();

    let archived = unsafe { archived_value::<Test>(buf.as_ref(), pos) };
    assert_eq!(archived.int, value.int);
    assert_eq!(archived.string, value.string);
    assert_eq!(archived.option, value.option);

    let mut deserializer = AllocDeserializer;
    let deserialized = archived.deserialize(&mut deserializer).expect("failed to deserialize value");
    assert_eq!(deserialized, value);
}
```